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ljgww opened this issue Mar 24, 2017 · 6 comments
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Get-Help (linux, ubuntu) #3419

ljgww opened this issue Mar 24, 2017 · 6 comments
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@SteveL-MSFT
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Issue-Bug Issue has been identified as a bug in the product Resolution-Fixed The issue is fixed. WG-Interactive-HelpSystem help infrastructure and formatting of help
Milestone
6.0.0-beta1

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@ljgww
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ljgww commented Mar 24, 2017

Get-Help on Ubuntu 14.04
$ powershell --version
powershell v6.0.0-alpha.17

Steps to reproduce

PS /home/lj> Get-Help Find Searching Help for Find ... [oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo] Get-Help Searching Help for Find ... [oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo]

Expected behaviour

Full help text

Actual behaviour

Seems that text rendering has no LF just CR so text gets overwritten with the new text in the stream.
In essence Get-Help is not usable at the moment as help text do not render properly.

Environment data

PS /home/lj> $PSVersionTable

Name Value

PSVersion 6.0.0-alpha
PSEdition Core
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 3.0.0.0
GitCommitId v6.0.0-alpha.17
CLRVersion
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

> $PSVersionTable
@ljgww ljgww changed the title Get-Help Get-Help (linux, ubuntu) Mar 24, 2017
@SteveL-MSFT SteveL-MSFT added the WG-Interactive-HelpSystem help infrastructure and formatting of help label Mar 25, 2017
@SteveL-MSFT SteveL-MSFT added this to the 6.0.0-beta1 milestone Mar 25, 2017
@SteveL-MSFT SteveL-MSFT self-assigned this Mar 25, 2017
@SteveL-MSFT
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I think this is a side effect of a broken progressbar (which was fixed #3362). if you set $progresspreference='silentlycontinue' it renders correctly.

@SteveL-MSFT
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This was not fixed with #3362 and something specific to formatting. Investigating.

@SteveL-MSFT SteveL-MSFT mentioned this issue Mar 29, 2017
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@averyfreeman
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I can confirm that setting $progresspreference='silentlycontinue' appears to fix this problem in Debian Stretch

@iSazonov iSazonov added Issue-Bug Issue has been identified as a bug in the product Resolution-Fixed The issue is fixed. labels Apr 13, 2017
@ljgww
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ljgww commented Apr 18, 2017

Thank you!

I got that this was honest mistake on my part, as later I figured out that as usual 'it is not what you are thinking you are saying but what you are actually saying'.

    Get-Help Find

is actually searching for non existent Find (cmdlet or other object) which I would expect to be something existent, or hoped to find 'finding' commands in search engine way. All other Get-Help actually (existing cmdlets help) renders well on Linux.
I did not expect to hit something deeper than that but as I see from the latter discussion it actually uncovered something deeper and as well something for me to learn about PS.

behaviour is the same for all unknown strings

tried: $progresspreference='silentlycontinue'

it works like charm even for Find.

    > Get-Help Find                                            

    Name                              Category  Module                    Synopsis 
    ----                              --------  ------                    -------- 
    Find-Command                      Function  PowerShellGet             ...      
    Find-DscResource                  Function  PowerShellGet             ...      
    Find-Script                       Function  PowerShellGet             ...      
    Find-Module                       Function  PowerShellGet             ...      
    Find-RoleCapability               Function  PowerShellGet             ...      
    Find-PackageProvider              Cmdlet    PackageManagement         Find-P...
    Find-Package                      Cmdlet    PackageManagement         Find-P...

@ljgww
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ljgww commented Apr 18, 2017 
    > Get-Help mela                                            
    Get-Help : Get-Help could not find mela in a help file in this session. To 
    download updated help topics type: "Update-Help". To get help online, search 
    for the help topic in the TechNet library at 
    https://go.microsoft.com/fwlink/?LinkID=107116.
    At line:1 char:1
    + Get-Help mela
    + ~~~~~~~~~~~~~
        + CategoryInfo          : ResourceUnavailable: (:) [Get-Help], HelpNotFoun 
       dException
        + FullyQualifiedErrorId : HelpNotFound,Microsoft.PowerShell.Commands.GetHe 
       lpCommand

'mela' is not matching anything. Error makes sense.

@SteveL-MSFT
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@ljgww Get-Help tries to be smart. It searches for exact match, and if not found, tries to match the title, and if not found, tries matching content before giving up. If one match is found, it displays it, otherwise shows a list of potential topics.

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Issue-Bug Issue has been identified as a bug in the product Resolution-Fixed The issue is fixed. WG-Interactive-HelpSystem help infrastructure and formatting of help
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